Wildfire influences the carbon cycle and impacts property, harvestable timber, and public health. 2023 saw a record area burned of 14.9 Mha in Canada, compared to an average of ~2 Mha between 1959 and 2015. Unfortunately, wildfire is a challenging physical process to represent in land surface models, and representing boreal fires is even more challenging. This limits our understanding of how fire regimes will respond to changes in future environmental conditions. We implement and evaluate a new wildfire module for the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC) that explicitly represents fire weather, lightning ignitions, anthropogenic ignition/suppression, fuel stocks, and climate vegetation feedbacks in Canada. We project future burned area and CO2 emissions and assess wildfires' drivers. We find that climate change below a 2°C global target (shared socioeconomic pathway [SSP] 126) yields burned area near modern (2004 - 2014) norms by end-century (2090 - 2100). However under rapid climate change (SSP370/585), the end-century mean annual burned area increases 2 - 4 fold, compared to present-day values, approaching the extreme 2023 burned area. Climate is the primary driver of projected area burned and emissions, whereas lightning is a key uncertainty. This work illustrates the trajectory of Canadian wildfires under climate change and their contribution to CO2 fluxes at the pan-Canadian scale.